Finishing tool



I July 23, 1929. E. ASHTON 1 ,721,505

FINISHING TOOL Filed Sept. 26, 1925 Patented July 23, 1929.

UNITED STATES PATENT OFFICE.

ERNEST ASHTON, OF S\VA1VI?SCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOEMACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

FINISHING TOOL.

Application filed September 26, 1S25.

This invention relates to finishing tools and is her in illustrated asembodied in a bufi ing roll of a type used extensively in thenanufacture of boots and shoes although the invention is applicable totreating tools of other types and designed for performing otheroperations.

In rolls of this type. in which the. abrasive material is usuallysupplied by means of a cover of abrasive material suca as sandpaper,which is wrapped around the rolhit has for a long time been customary tohold the abrasive cover in place upon the roll by means of a series ofpaper-clamping hooks inserted radially into the body of the roll andarranged to be drawn down by an internally-disposed actuator tightlyagainst one edge of the sheet of material to clamp in plaice. One suchconstruction which has been used extensively and with a high deojroe ofsuccess is illustrated in United States Letters i atent- No. 1,014,094,granted Januarv 9. 1912. upon the application of W. A 126m; Onereasonfor the success of th r arrangement lies in the fact that it provides adevice for detachably securing the hooks to an actuator bar so thatbroken hoo" may be replaced without necessitating the disas sembling ofthe roll as a whole.

For the purpose of still further facilitating removal and replacement ofabrasivecover clamping members in a roll of the type above referred to,the present invention provides an improved abrading tool compri Eng. asherein illustrated a series of ulJlilSlfQ- cover en aging and retaininghooks individuallv co ected to common actuator. together with a slidinglocaing device for pushing home the retaining hooks as they are broughtinto eng gement with the actuator bar and scou them in this relation. Asresult. in the illustrated construction to be more fully dcscrihetl1ei-""'nafter, the op erator is enabled to remove a broken hook andreplace it without disturbing the cooneratiiig engagement of the otherhooks and the bar within the roll, and with the assurance that he end ofthe hook which he has placed in. he roll correctly engaged with theactuator bar. This operation will be followed by movement of the lockingdevice to secure all the hooks in cooperating engagement with theactuator bar.

Serial No. 58,922.

F or a better understanding of the exact construction of my improvedabrading tool reference may be had to the following specification andclaims taken in connection with the accompanying drawings in which:

Fig. l is a fragmentary, transverse section through an abrading tool towhich my invention has been applied;

Fig. 2 is a plan view of the actuator bar and its associated lockingdevice;

Fig. 3 is a side elevation thereof;

Fig. l is a fragmentary, perspective view of a portion of the same,showing a coverc laniping hook locked in engagement with the actuatorbar;

Fig. 5 is a similar view of the under side of the locking device at theother end;

1g. 6 is an end view of an abrading tool employing my invention;

Figs. 7, 8 and 9 are fragmentary views or a portion of an actuator barand associated cover-clamping hook together with a modified form of thelocking device. i

The illustrated abrading tool includes a cylindrical, wooden core 10(Fig. 1) surrounded by a resilient covering 12 of felt, these body partsbeing held in position upon a. power-driven shaft 14 by means of collars16 (Fig. 6) secured to the shaft at the two ends of the roll. Provisionis made for limited rotation of the body parts with respect to said'collars and the shaft, all as shown in the above-mentioned LettersPatent No. 1.014 094, to which reference may be had for a more completedescription of the parts not fully illustrated ordescribed herein. Theabrasive cover 20 is secured in position upon the roll by forciblythreading one edge por tion 22 of a sheet of abrasive material over theflattened outer terminal portion 28 of a s ries of paper-clamping hooks24 distributed lengthwise of the butting roll and, after wrapping thesheet of material around the roll, bringing the other edge 26 thereofinto position for engagement by the overhanging ends 28 of the clampingbooks 24. These hooks 24: are provided with depending cylin dricalshanks 30'which extend radially into the body of the roll and aredetachably secured to an actuator bar 32 extending longitudinally of thebuffing roll within a suitably formed slot 34 in the core 10. This bar32 may be moved outwardly to lift the hooks or inwardly to bring theminto the clamping position illustrated in Fig. 1. The inward andoutward, substantialy radial movement of the hooks 24 and the bar 32 maybe effected, as in the patented device, by relative movement of the rolland its col lars l6 to cause the cam slots 36 (Fig. 6) in the collars,engaging the ends of the actuator bar 32, to move said bar. Concealedspring-pressed latches are provided, as in the patented construction, toprevent rotation of the body parts with respect to the collars, and amanually operated plunger 38 is slidably mounted to project through theright hand collar to a position where it may be depresesd to releasethese latches.

In the construction illustrated in Figs. 1 to 6, the actuator bar 82 isprovided with a series of hook-shaped portions 40 whose overhanging endsforming shoulders extend transversely of said bar and form undercutrecessed projections opening laterally and longitudinally of the bar.The inner lower ends of the clamping hooks 24 are provided with arms 42extending at right angles to the shanks of said hooks and also at rightangles to the direction of the overhanging, flattened ends 28 of thehooks. These inner ends 42 are normally disposed parallel to the axis ofthe roll and are adapted to be moved longitudinally of the actuator 32to bring said arms 42 into the recesses of the hook portions 40. To thisend the felt covering 12 and the wooden body portion are provided withelongated slots 44 through which the arms 42 may be inser ed at aposition at one side of the hook portions and then moved axially of theroll to insert the arms 42 into the recesses of the bar, therebyinterengaging and mutually interlocking the hooks and the bar at pointsinside of the resilient covering. Preferably and as illustrated, oneside of the slot 34 within the roll is provided with a metallic liningplate 46 which, co-operating with the open sides of the hook portions 40(see Fig. 1), prevents accidental lateral disengagement of the arms 42from the hook portions 40 circumferentially of the roll such as mightresult in case the slot 84 became enlarged by wear.

The paper-clamping hooks 24 are held interlocked with the lateralrecessed extension of the actuator bar 32 by means of a locking device50 in the form of a thin, metal plate disposed along one side of theactuator bar within the slot 34 of the body portion 10 of the roll. Thislocking device 56 is provided with separated lips 52 bent laterally overthe upper surface of the actuator bar at positions adjacent to the hooksthereon and each provided with an upstanding flange 54 and thusconstitutes a shifting abutment to hold the hooks. The lower edge of thelocking device 50 is bent inwardly to form a bottom face 56 (Fig. 1)disposed beneath the actuator bar 32 to hold the locking device 50 uponthe bar. Accidental lengthwise displacement of the locking device 50with respect to the actuator bar 32 is avoided by slitting the ends ofthe bottom face 56 at 58 and 60 to form tongues 62 and 64 which are bentinwardly before the locking device is applied to the bar so that theyfrictionally engage it. The end 66 of the tongue 64 is bent in rathersharply so that it curls over a shoulder 68 in the bar 82 and even moreelfectually prevents displacement. It should be noted that the operationof removing and replacing hooks is always undertaken when the actuatorbar ismoved outwardly to lift the hooks away from the roll by rotationof the collars 16, and in this position apertures 61 (Fig. 6) in saidcollars come into registration with the ends of the actuator bar andallow the insertion of a suitable tool to press the locking device 50 inone direction or the other as may be required.

The arrangement described provides then not only for the readymanipulation of the roll to remove and replace the abrasive coveringsthereon and to hold said coverings in place by means of hooks which arepressed inwardly so that their outer ends lie beneath the level of theresilient covering of the roll but provides also an arrangementfacilitatin g the removal and the replacement of individualpaper-clamping hooks in case of breakage. To carry out this operationthe operator will first depress the latch-releasing plunger 38 on theend collar 16 and then effect a relative rotation of the body of theroll and said collars, thereby lifting the actuator bar 32 and theassociated clamping hooks 24 to release the abrasive cover and to bringsaid hooks 24 into a raised position where the upper ends of the shanks50 of the broken hooks will project above the resilient cover of theroll. The operator will then insert a suitable tool through one of theapertures 61 in a collar 16 and move the locking device 50longitudinally of the roll. This will move the upstanding flanges 54 onsaid locking device away from the clamping hooks 24 and allow movementlongitudinally of the roll of any of the hooks which it is desired toremove and replace. A simple translatory movement thus parallel to theaxis of the roll will move the arm 42 of any of said hooks laterallyfrom beneath the coacting hooked portion 40 of the ac tuator bar,whereupon it may be lifted out of the slot 44 in the roll. In insertinganother hook, the operation is reversed and after inserting the end of ahook into a slot 44 of the resilient cover of the roll, the hook will bemoved longitudinally of the roll to bring its arm 42 into interlockingposition not only permits passage of the arms 42, but also accommodatesthe shank portions 30 of the hooks 24 in their translatory movementabove described. lVhen so inserted, a hook will remain in position andit will be noted that the operation just described does not necessitatethe disengagement of any of the other hooks from the actuator bar. Byinserting a suitable tool through the aperture 61 at the other end ofthe roll, the locking device 50 may then be moved back into the positionillustrated in Figs. 4 and 5, and when so moved, it will push home allof the paper-clamping hooks and securely hold them in co-operativeengagement with the actuator bar. The locking device jllSb described, byreason of being constructed of sheet metal, is comparatively rigid inspite of its relatively great length and is, furthermore, so confinedbetween the actuator bar 32 and the slot .34 in the body of the rollthat there is little chance that it will become bent or distorted so asto interfere with the movement of said locking device.

As in the construction of the Patent No. 1,014,094, deflect-ion of thecentral part of the actuator bar is prevented by means of a hook(Fig. 1) which is formed as an integral part of a ring 72 which isrigidly connected to the collars 16. When the collars 16 and the bodyparts of the roll are relatively rotated to cause the elevation of theactuator bar 32 and its attached hooks, said bar is withdrawn laterallyfrom the opening 74 of said hook so that there is no interference withthe movement of the bar. In accordance with a feature of the invention,the opening 74: of the hook 70 is just wide enough so that the bar plusthe bottom flange 56 of the slide 50 cannot be moved into said opening.The slide 50, however, has a notch 76, 3) formed by cutting away thelower corner and part of the bottom face 56, which, when the slide is inlocking position, is in alinement with the hook 70. This serves toprevent the relative rotation of the roll and the collars 16 to lockedposition unless the slide 50 is also in position to lock the hooks 24 inplace.

Inthe modified form of the invention illustrated in Figs. 7, 8 and 9,the actuator bar 32 is provided with overhanging hook portions 1&0extending in the opposite direction from the hook portions 0 shown inthe device just described. The form of the paper-clamping hooks 24 isexactly like that of the hooks shown in connection with the otherarrangement. In this arrangement, however, the locking device 150 isprovided with upstanding flanges 146 which, by cooperating with the hookportions 14-0 on the actuator oar, prevent the displacement of theiiaper-clamping hooks 24 from their positions beneath said portions 140.Inturned lips 152 having upstanding flanges 154 correspond exactly tothe parts 52 and 54 in the preferred form of the device and the loweredge of the locking device is bent beneath the actuator bar aspreviously described.

Since the shanks 30 of the hooks 24 have been described as extendingradially of the body of the roll, and the inner ends 42 have beendescribed as extending parallel to the axis of the roll, and theflattened terminal or clamping portions 28 are, as illustrated, disposed circumferentially of the roll, when the hooks 2% are in operativeposition, it will be clear that in whatever position the hooks 24: mayassume, the terminal portions 28 and 42 will extend substantially atright angles to the shank portion 30 and to the planes de lined by eachother and by the shank portion 30.

Having described my invention, what I claim as new and desire to secureby Letters Patent of the United States is 1. A finishing tool comprisinga cylindrical body. a cover wrapped around said cylindrical body, meansfor binding said cover upon the body comprising hooks movable radiallyof the body to clamp the cover, and a common actuator for effecting saidradial movement of said hooks, said hooks and said actuator beingconstructed and arranged for relati e movement to bring them intointerlocking engagei'nent, the direction of said relative movement beinglongitudinal with respect to the axis of said cylindrical body.

2. A finishing tool comprising a body adapted to receive and support a.COVGII, means for clamping said cover on the body comprising a clampinghook having an exposed end arranged to overhang and clamp the cover anda shank movable in and out of said body, and a rigid actuator disposedwithin the body of the tool provided with a shoulder having an undercutrecess, the inner end of said hook being constructed and arranged toenter said recess to effect interlocking engagement with said actuator.

23. A. finishing tool comprising an elongated roll adapted to receiveand support a cover, a rigid actuator bar extending longitudinally ofand within said roll and adapted for movement radially thereof, saidactuator bar being provided with an undercut recess, and a hook forclamping said abrasive cover provided with an exposed portion forengagement with the cover, a shank portion extending into the body ofthe cylindrical roll, and a hook-shaped inner end adapted to be movedinto the undercut recess of said actuator to interlock the two devicesby reason of such engagement, and means movable with respect to saidactuator arranged to retain said hook in interlocking engagement withsaid rigid actuator.

l. A finishing tool for use in the manufacture of boots and shoes,comprising a body,

a resilient pad on said body adapted to receive and support a finishingcover, and means for clamping said cover upon said pad-covered bodycomprising an actuat r bar provided with hook-shaped portions havingoverhanging shoulders disposed wholly within the body of the roll andclamping hooks adapted by movement lengthwise of the bar to be broughtinto holding position under the shoulders of the hook-shaped portions ofsaid actuator bar within the body o l the roll.

A finishing tool for use in the manufacture of boots and shoes,comprising a rotatable body adapted to r ceive and support a finishingcover, and means for clamping said cover upon said body comprising anactuator bar disposed inside the body and a plurality of clamping hooksadapted to be inserted radially into the body and movable independentlyaxially of the body to bring said hooks successively into interlockingengagement with said actuator bar.

(5. A finishing tool for use in the manufacture of boots and shoes,comprising a rotatable body adapted to receive and support a finishingcover, and means for clamping said cover upon said body comprising anactuator bar disposed inside the body, a plurality of clamping hooksadapted to be inserted radially into the body and movz ble independentlyaxially of the body to bring said hooks suc e 'vely into interlockingengagement with said actuator bar, and means movable longitudinally ofsaid actuator bar constructed and nged to complete the engagement of thenooks with the bar and to hold them in locked relation.

7. A finishing tool for use in the manufacture 0t boots and shoes,comprising a rotatable body adapted to receive and support a finishingcover, means for clamping said cover upon said body comprising anactuator bar disposed inside the body, a plurality of clai'nping hooksadapted to be inserted into the body and constructed and arranged to beii'idividiially moved into locking engagement with the actuator bar, anda common locking means for holding said hooks in engagenient with saidbar.

8. A finishing tool for use in the manufacture of boots and shoes,comprising a retatable body adapted to r eive and support a finishingcover and pro v ed with radial recess, means for clamping said cover tosaid body comprising an actuator bar provided with an overhanginghook-shaped portion having its open side closely adjacent to one side oisaid recess and a clamping hook adapted to be brought into engagementwith the finishing cover by radial movement of said actuator bar, saidbar and clamping hook being so constructed and arranged that theclamping hook and the hook-shaped portion of the bar may be brought intointerlocking engagement by relative movement between the bar and thehook in a direction parallel to the axis of the tool.

9. A finishing tool for use in the manufacture of boots and shoes,comprising a cylindrical roll adapted to receive and support a finishingcover, a resilient cover for said roll provided with aplurality ofnarrow slots elongated longitudinally of the roll, an actuator bardisposed beneath the slots of said resilient cover having a plurality ofrecessed projections, and means for clamping the finishing cover oversaid resilient cover comprising a plurality of hooks adapted to beinserted through the slots in said resilient cover and movedlongitudinally of the roll into interlocking engagement with therecessed projections of the actuator bar.

10. A finishing tool for use in the manufacture of boots and shoes,comprising a cylindrical roll adapted to receive and support a finishingcover, a resilient cover for said roll provided with a plurality ofnarrow slots, an actuator bar disposed beneath the slots in saidresilient cover having undercut recesses opening longitudinally of thebar, and means for clamyfing the abrasive cover over said resilientcover comprising a plurality of hooks having their inner ends bent in a.direction parallel to the length of said bar and adapted to be passedthrough the slots of the resilient cover and moved individually intolocking engagement with the recesses of the actuator bar.

11. A finishing tool for use in the manufacture of boots and shoes,comprising a body adapted to receive and support a linishing cover, andmeans for clamping said cover on said body comprising an actuator barand cover-clamping hooks disposed within the body, said bar and hooksbeing arranged for mutual interlocking engageizient, said hooks beingdetachably engaged with said actuator bar, and additional means forholding said hooks in engagement with the actuator bar after they havebeen interlocked comprising a locking device movable *leugthwise ot' theactuator bar and constructed. of sheet metal folded around said bar.

12. In an abrading tool, a body adapted to receive and support anabrasive cover and means tor clamping said cover on said body,comprising an actuator bar disposed within the body, cover-clannginghooks detachably interlocked with said actuator bar, a, it means forholding said hooks in hooked en gagement with the actuator barcomprising a shitting abutn'ient frictionally engaging said barconstructed and arranged in one position to abut the hooks and therebyto keep them from unhooking.

13. A butting tool comprising a rotatable body adapted to receive andsupportan abrasive cover, and means for clamping said cover upon saidbody comprising an actuator bar disposed within the body and havinghook-shaped extensions opening laterally and longitudinally of the barcover clamping members detacl'iably interlocked with said extensions,and means for preventing accidental lateral disengagement of saidclamping members and said bar upon relative movement thereofcircunltercntially of the tool.

14:. A butting tool comprising a rotatable bony adapted to receive andsupport an abrasive cover, and means for clamping said cover upon saidbody comprising an actu ator bar disposed within the body and havingrecessed lateral extensions, cover-clamping members detachablyinterlocked with said extensions, and means for preventing disengagementof said clamping members and said bar upon relative movement there ofaxially of the tool.

15. A bulling tool comprising a rotatable body adapted to receive andsup-port an abrasive cover, and means for clamping said cover upon saidbody comprising an actuator bar disposed within the body and havingrecessed lateral extensions, cover-clamp ing' members detachablyinterlocked with said extensions, and means movable longitudinally ofthe tool arranged in one position to prevent relative unhooking movementof the clamping members and the bar in a direction parallel to the axisof the tool.

16. A butting tool comprising a rotatable body adapted to receive andsupport an abrasive cover, and means for clamping said cover upon saidbody comprising an actuator bar disposed within the body and having openhookshaped extensions, cover-clamping members detachably interlockedwit-h said extensions by interengagement therewith, and means comprisinga plate folded around said bar and movable longitudinally of the rollarranged in one position to pre vent disengagement and result-antunlocking of said clamping members from said hookshaped extensions.

17. A bufiing tool comprising a rotatable body adapted to receive andsupport an ab 'asive cover, and means for clamping said cover upon saidbody comprising an actuator bar disposed within the body and having openhook-shaped eXtensionS, coverclamping hook members detachablyinterlocked with said extensions, and means for preventing the unhookingof said clamping members from said hook-shaped extensions comprising asheet metal slide cooperating with said bar and provided with upstandingflanges adapted to be brought into engagement with said clamping membersto hold them interlocked with the actuator bar.

18. For an abrading roll, a cover-retaining hook comprising a shankportion extending substantially radially of said roll, and terminalportions extending substantially at right angles to said shank portionand to the planes defined by each other and the shank portion.

19. An abrading tool comprising a rotatable body adapted to receive andsupport an abrasive cover, and a radially disposed cover-clamping memberhaving a flattened outer terminal portion overlying one edge of tncabrasive cover and a cylindrical shank portion bent into a hook shape atits inner end.

20. An abrading tool comprising a rotatable body adapted to receive andsupport an abrasive cover, and a cover-clamping member having aflattened outer terminal portion overlying one edge of the abrasivecover and a cylindrical shank portion bent into a hook shape at itsinner end, said inner end extending in a direction parallel to the axisof the tool.

21. A finishing tool for use in the manufacture of boots and shoescomprising a body adapted to receive and support a finishing cover,means for clamping said cover on said body comprising a radially movableactuator bar disposed within the body cover, clamping hooks detachablyengaged with said actuator bar, means for holding said hooks inengagement with the actuator bar eomprising a locking device movablelengthwise of the bar, and a hook disposed midway of the roll to receiveand support the actuator bar in its inner position, said locking devicebeing constructed and arranged to prevent engagement of the actuator barwith the hook in one position of the locking device.

22. A finishing tool for use in the manufacture of boots and shoescomprising a body adapted to receive and support a finishing cover, endcollars secured to the driving shaft to position said body upon theshaft, means for clamping the cover upon the body comprising an actuatorbar disposed tor radial movement within the body as said body is rotatedwith respect to the end collars, cover-clamping hooks detachably engagedwith said actuator bar, means for holding the said hooks in engagementwith the actuator bar comprising a locking device movable lengthwise ofthe actuator bar, and a retaining hook secured to said end collars anddisposed midway of the roll adapted to receive and support the actuatorbar in its inner position, said locking device being constructed andarranged to prevent engagement of the actuator bar with the hook unlessthe lockin device is in position to retain the hooks in engagement withthe bar.

23. A finishing tool comprising a cylindrical body,'a cover wrappedaround said cylindrical body, means for binding said cover upon the bodycomprising hooks movable radially of the body to clamp the cover, acommon actuator for elfecting said radial movement of said hooks, saidhooks and said actuator being constructed and arranged ifor relativemovement to bring them into interlocking engagement, the direction ofsaid relative movement being longitudinal it-h respect to the axis ofsaid cylindrical body, and means for holding said hooks and saidactuator in interlocked relation.

2a. A finishing tool comprising a roll adapted to receive and support acover, means for clamping said cover on the roll comprising a hookhaving an exposed end arranged to overhang and clamp the cover and ashank movable in and out of said roll, and an actuator disposed Withinthe iody of the roll for effecting said in and out movement of the shankof said hook, said hook and said actuator being constructed and arrangedto provide for engagement of said hook with said actuator by atranslator-y movement of said hook parallcl to the axis of said roll,said roll having a slot for the shank of said hook, said slot beingelongated in a direction parallel to the axis of said roll toaccommodate said translatory movement of said hook.

25. A bufiing tool comprising arotatable body adapted to receive andsupport an abrasive cover, and means for clamping said cover upon saidbody comprising an actuator bar disposed Within the body and havinghook-shaped extensions opening laterally and longitudinally of the bar,and cover-clamping members detachably interlocked with said extensions,said rotatable body being constructed and arranged to prevent accidentallateral disengagement of said clamping members and said bar uponrelative movement thereoi circumferentially of the tool.

In testimony whereof I have signed my name to this specification.

ERNEST ASHTON.

